150661351221 has 8 divisors (see below), whose sum is σ = 200909921664. Its totient is φ = 100426840800.

The previous prime is 150661351201. The next prime is 150661351241. The reversal of 150661351221 is 122153166051.

It is an interprime number because it is at equal distance from previous prime (150661351201) and next prime (150661351241).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 150661351221 - 2¹³ = 150661343029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (150661351201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3489976 + ... + 3532881.

It is an arithmetic number, because the mean of its divisors is an integer number (25113740208).

Almost surely, 2^150661351221 is an apocalyptic number.

It is an amenable number.

150661351221 is a deficient number, since it is larger than the sum of its proper divisors (50248570443).

150661351221 is an equidigital number, since it uses as much as digits as its factorization.

150661351221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7030011.

The product of its (nonzero) digits is 10800, while the sum is 33.

The spelling of 150661351221 in words is "one hundred fifty billion, six hundred sixty-one million, three hundred fifty-one thousand, two hundred twenty-one".